<template>
  <j-modal
      :title="name + '选择'"
      :visible="visible"
      :width="width"
      cancelText="关闭"
      centered
      switchFullscreen
      @cancel="close"
      @ok="handleOk">

    <a-row :gutter="18">
      <a-col :span="16">
        <!-- 查询区域 -->
        <a-form class="j-inline-form" layout="inline">
          <!-- 固定条件 -->
          <a-form-item :label="(queryParamText||name)">
            <a-input v-model="queryParam[queryParamCode||valueKey]" :placeholder="'请输入' + (queryParamText||name)"
                     @pressEnter="searchQuery"/>
          </a-form-item>
          <!-- 动态生成的查询条件 -->
          <j-select-biz-query-item v-if="queryConfig.length>0" v-show="showMoreQueryItems" :queryConfig="queryConfig"
                                   :queryParam="queryParam" @pressEnter="searchQuery"/>
          <!-- 按钮 -->
          <a-button icon="search" type="primary" @click="searchQuery">查询</a-button>
          <a-button icon="reload" style="margin-left: 8px" type="primary" @click="searchReset">重置</a-button>
          <a v-if="queryConfig.length>0" style="margin-left: 8px" @click="showMoreQueryItems=!showMoreQueryItems">
            {{ showMoreQueryItems ? '收起' : '展开' }}
            <a-icon :type="showMoreQueryItems ? 'up' : 'down'"/>
          </a>
        </a-form>

        <a-table
            :columns="innerColumns"
            :customRow="customRowFn"
            :dataSource="dataSource"
            :loading="loading"
            :pagination="ipagination"
            :rowKey="rowKey"
            :rowSelection="{selectedRowKeys, onChange: onSelectChange, type: multiple ? 'checkbox':'radio'}"
            :scroll="{ y: 240 }"
            bordered
            size="middle"
            @change="handleTableChange">
        </a-table>

      </a-col>
      <a-col :span="8">
        <a-card :body-style="{padding:0}" :bordered="false" :head-style="{padding:0}" :title="'已选' + name">

          <a-table :rowKey="rowKey" bordered size="middle" v-bind="selectedTable">
              <span slot="action" slot-scope="text, record, index">
                <a @click="handleDeleteSelected(record, index)">删除</a>
              </span>
          </a-table>

        </a-card>
      </a-col>
    </a-row>
  </j-modal>
</template>

<script>
import {getAction} from '@/api/manage'
import Ellipsis from '@/components/Ellipsis'
import {JeecgListMixin} from '@/mixins/JeecgListMixin'
import {cloneObject, pushIfNotExist} from '@/utils/util'
import JSelectBizQueryItem from './JSelectBizQueryItem'

export default {
  name: 'JSelectBizComponentModal',
  mixins: [JeecgListMixin],
  components: {Ellipsis, JSelectBizQueryItem},
  props: {
    value: {
      type: Array,
      default: () => []
    },
    visible: {
      type: Boolean,
      default: false
    },
    valueKey: {
      type: String,
      required: true
    },
    multiple: {
      type: Boolean,
      default: true
    },
    width: {
      type: Number,
      default: 900
    },

    name: {
      type: String,
      default: ''
    },
    listUrl: {
      type: String,
      required: true,
      default: ''
    },
    // 根据 value 获取显示文本的地址，例如存的是 username，可以通过该地址获取到 realname
    valueUrl: {
      type: String,
      default: ''
    },
    displayKey: {
      type: String,
      default: null
    },
    columns: {
      type: Array,
      required: true,
      default: () => []
    },
    // 查询条件Code
    queryParamCode: {
      type: String,
      default: null
    },
    // 查询条件文字
    queryParamText: {
      type: String,
      default: null
    },
    // 查询配置
    queryConfig: {
      type: Array,
      default: () => []
    },
    rowKey: {
      type: String,
      default: 'id'
    },
    // 过长裁剪长度，设置为 -1 代表不裁剪
    ellipsisLength: {
      type: Number,
      default: 12
    },
  },
  data() {
    return {
      innerValue: [],
      // 已选择列表
      selectedTable: {
        pagination: false,
        scroll: {y: 240},
        columns: [
          {
            ...this.columns[0],
            width: this.columns[0].widthRight || this.columns[0].width,
          },
          {title: '操作', dataIndex: 'action', align: 'center', width: 60, scopedSlots: {customRender: 'action'},}
        ],
        dataSource: [],
      },
      renderEllipsis: (value) => (<ellipsis length={this.ellipsisLength}>{value}</ellipsis>),
      url: {list: this.listUrl},
      /* 分页参数 */
      ipagination: {
        current: 1,
        pageSize: 5,
        pageSizeOptions: ['5', '10', '20', '30'],
        showTotal: (total, range) => {
          return range[0] + '-' + range[1] + ' 共' + total + '条'
        },
        showQuickJumper: true,
        showSizeChanger: true,
        total: 0
      },
      options: [],
      dataSourceMap: {},
      showMoreQueryItems: false,
    }
  },
  computed: {
    // 表头
    innerColumns() {
      let columns = cloneObject(this.columns)
      columns.forEach(column => {
        // 给所有的列加上过长裁剪
        if (this.ellipsisLength !== -1) {
          column.customRender = (text) => this.renderEllipsis(text)
        }
      })
      return columns
    },
  },
  watch: {
    value: {
      deep: true,
      immediate: true,
      handler(val) {
        this.innerValue = cloneObject(val)
        this.selectedRowKeys = []
        this.valueWatchHandler(val)
        this.queryOptionsByValue(val)
      }
    },
    dataSource: {
      deep: true,
      handler(val) {
        this.emitOptions(val)
        this.valueWatchHandler(this.innerValue)
      }
    },
    selectedRowKeys: {
      immediate: true,
      deep: true,
      handler(val) {
        //update--begin--autor:scott-----date:20200927------for：选取职务名称出现全选 #1753-----
        if (this.innerValue) {
          this.innerValue.length = 0;
        }
        //update--end--autor:scott-----date:20200927------for：选取职务名称出现全选 #1753-----
        this.selectedTable.dataSource = val.map(key => {
          for (let data of this.dataSource) {
            if (data[this.rowKey] === key) {
              pushIfNotExist(this.innerValue, data[this.valueKey])
              return data
            }
          }
          for (let data of this.selectedTable.dataSource) {
            if (data[this.rowKey] === key) {
              pushIfNotExist(this.innerValue, data[this.valueKey])
              return data
            }
          }
          console.warn('未找到选择的行信息，key：' + key)
          return {}
        })
      },
    }
  },

  methods: {

    /** 关闭弹窗 */
    close() {
      this.$emit('update:visible', false)
    },

    valueWatchHandler(val) {
      val.forEach(item => {
        this.dataSource.concat(this.selectedTable.dataSource).forEach(data => {
          if (data[this.valueKey] === item) {
            pushIfNotExist(this.selectedRowKeys, data[this.rowKey])
          }
        })
      })
    },

    queryOptionsByValue(value) {
      if (!value || value.length === 0) {
        return
      }
      // 判断options是否存在value，如果已存在数据就不再请求后台了
      let notExist = false
      for (let val of value) {
        let find = false
        for (let option of this.options) {
          if (val === option.value) {
            find = true
            break
          }
        }
        if (!find) {
          notExist = true
          break
        }
      }
      if (!notExist) return
      getAction(this.valueUrl || this.listUrl, {
        // 这里最后加一个 , 的原因是因为无论如何都要使用 in 查询，防止后台进行了模糊匹配，导致查询结果不准确
        [this.valueKey]: value.join(',') + ',',
        pageNo: 1,
        pageSize: value.length
      }).then((res) => {
        if (res.success) {
          let dataSource = res.result
          if (!(dataSource instanceof Array)) {
            dataSource = res.result.records
          }
          this.emitOptions(dataSource, (data) => {
            pushIfNotExist(this.innerValue, data[this.valueKey])
            pushIfNotExist(this.selectedRowKeys, data[this.rowKey])
            pushIfNotExist(this.selectedTable.dataSource, data, this.rowKey)
          })
        }
      })
    },

    emitOptions(dataSource, callback) {
      dataSource.forEach(data => {
        let key = data[this.valueKey]
        this.dataSourceMap[key] = data
        pushIfNotExist(this.options, {label: data[this.displayKey || this.valueKey], value: key}, 'value')
        typeof callback === 'function' ? callback(data) : ''
      })
      this.$emit('options', this.options, this.dataSourceMap)
    },

    /** 完成选择 */
    handleOk() {
      let value = this.selectedTable.dataSource.map(data => data[this.valueKey])
      this.$emit('input', value)
      this.close()
    },
    /** 删除已选择的 */
    handleDeleteSelected(record, index) {
      this.selectedRowKeys.splice(this.selectedRowKeys.indexOf(record[this.rowKey]), 1)
      //update--begin--autor:wangshuai-----date:20200722------for：JSelectBizComponent组件切换页数值问题------
      this.selectedTable.dataSource.splice(this.selectedTable.dataSource.indexOf(record), 1)
      this.innerValue.splice(this.innerValue.indexOf(record[this.valueKey]), 1)
      console.log("this.selectedRowKeys:", this.selectedRowKeys)
      console.log("this.selectedTable.dataSource:", this.selectedTable.dataSource)
      //update--begin--autor:wangshuai-----date:20200722------for：JSelectBizComponent组件切换页数值问题------
    },

    customRowFn(record) {
      return {
        on: {
          click: () => {
            let key = record[this.rowKey]
            if (!this.multiple) {
              this.selectedRowKeys = [key]
              this.selectedTable.dataSource = [record]
            } else {
              let index = this.selectedRowKeys.indexOf(key)
              if (index === -1) {
                this.selectedRowKeys.push(key)
                this.selectedTable.dataSource.push(record)
              } else {
                this.handleDeleteSelected(record, index)
              }
            }
          }
        }
      }
    },

  }
}
</script>
<style lang="less" scoped>
.full-form-item {
  display: flex;
  margin-right: 0;

  /deep/ .ant-form-item-control-wrapper {
    flex: 1 1;
    display: inline-block;
  }
}

.j-inline-form {
  /deep/ .ant-form-item {
    margin-bottom: 12px;
  }

  /deep/ .ant-form-item-label {
    line-height: 32px;
    width: auto;
  }

  /deep/ .ant-form-item-control {
    height: 32px;
    line-height: 32px;
  }
}
</style>